Slide Deck

Breakout exercise 1

Execute the following code:

# make a directory named tmp
mkdir tmp
# move into tmp 
cd tmp
# add an empty file named tmp_file
touch tmp_file
# add an empty directory named another_tmp
mkdir another_tmp
# add an empty file to another_tmp directory
touch another_tmp/another_tmp_file
  • In your breakout group, figure out how to…
    • list all files with sizes displayed in bytes/kilobyes/megabytes
    • remove tmp_file
    • rename another_tmp_file to such_a_cool_file
    • remove tmp directory and all its contents
???

7 minutes.

Breakout exercise 2

In your breakout group, write bash code that executes each of the following. * find “To be, or not to be” and write the contents of this monologue to a file speech.txt (hint: the speech is 35 lines) * make a file called greatest_hits.txt that includes: * the “To be, or not to be” speech * the line that includes “know not what we may be” * all lines that include the word “doubts” or “Doubts” * replaces all instances of the string “doubts” with “uncertainties” in your greatest_hits.txt file (hint: sed or awk)

???

sed and awk are more flexible than grep, but I find the syntax very cryptic and difficult to remember. I often have to Google to remind myself how it works.

~ 10-15 min

Breakout exercise 3

Write a script that * uses curl to download the text of Romeo and Juliet from Project Gutenberg * http://www.gutenberg.org/files/1112/1112.txt ; * counts the number of lines for characters Romeo (“Rom.”), Juliet (“Jul.”), and the Apothecary (“Apoth.”); * saves a plain text file that for each of these characters says: * “[character] has [num] lines”.

Hints: use for loops